An early Twitter user suggested using hashtags, think he's generally credited with it: http://factoryjoe.com/blog/2007/08/25/groups-for-twitter-or-a-proposal-f

An early Twitter user suggested using hashtags, think he's generally credited with it: http://factoryjoe.com/blog/2007/08/25/groups-for-twitter-or-a-proposal-for-twitter-tag-channels/ http://factoryjoe.com/blog/2007/08/25/groups-for-twitter-or-...